'use strict';
const db=uniCloud.database();
const dbCmd=db.command;
exports.main = async (event, context) => {
	const {
		user_id,
		article_id
	} = event;
	
	const user =await db.collection('user').doc(user_id).get();
	const thumbs_up_article_ids = user.data[0].thumbs_up_article_ids;
	
	let thumbs_ids=null;
	
	if(thumbs_up_article_ids.includes(article_id)){
		return {
			code:200,
			msg:'已点过赞了！'
		}
	}else{
		thumbs_ids=dbCmd.addToSet(article_id)
	}
	
	await db.collection('user').doc(user_id).update({
		thumbs_up_article_ids:thumbs_ids
	})
	
	await db.collection('article').doc(article_id).update({
		thumbs_up_count:dbCmd.inc(1)
	})
	
	//返回数据给客户端
	return {
		code:200,
		msg:'点赞成功！！！'
	}
};
